KR970700281A - VARLABLE VALVE TIMING - Google Patents

VARLABLE VALVE TIMING Download PDF

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Publication number
KR970700281A
KR970700281A KR1019960703066A KR19960703066A KR970700281A KR 970700281 A KR970700281 A KR 970700281A KR 1019960703066 A KR1019960703066 A KR 1019960703066A KR 19960703066 A KR19960703066 A KR 19960703066A KR 970700281 A KR970700281 A KR 970700281A
Authority
KR
South Korea
Prior art keywords
yoke
valve
hollow shaft
actuating rod
cam
Prior art date
Application number
KR1019960703066A
Other languages
Korean (ko)
Inventor
프로스트 데렉
Original Assignee
티. 엠. 랜스빌드
메카다인 리미티드
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 티. 엠. 랜스빌드, 메카다인 리미티드 filed Critical 티. 엠. 랜스빌드
Publication of KR970700281A publication Critical patent/KR970700281A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0057—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by splittable or deformable cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

PCT No. PCT/GB94/02669 Sec. 371 Date Jun. 5, 1996 Sec. 102(e) Date Jun. 5, 1996 PCT Filed Dec. 6, 1994 PCT Pub. No. WO95/16108 PCT Pub. Date Jun. 15, 1995A valve operating mechanism comprises a hollow shaft (10), a sleeve journalled on the hollow shaft and having a cam, a coupling yoke (16) connected by a first pivot pin (18) to the hollow shaft (10) and by a second pivot pin (20) to the sleeve and means for pivoting the yoke (16) to effect a phase change between the hollow shaft (10) and the sleeve, wherein the means for pivoting the yoke (16) comprises an actuating rod (24) slidably received in the hollow shaft (10), a cam surface on the actuating rod (24) and a plunger (22) passing through a generally radial bore in the hollow shaft (10) to cause the yoke (16) to pivot in response to axial movement of the actuating rod (24).

Description

밸브 작동장치(VARLABLE VALVE TIMING)VARLABLE VALVE TIMING

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 가변형 밸브 개폐기능을 가지고, 엔진에 연결되는 제2도의 캠새프트를 단면 Ⅰ-Ⅰ를 따라 절단한 단면도, 제2도는 플런져가 최대 확장위치에 있을때, 캠새프트를 지나는 제1도의 단면 Ⅱ-Ⅱ를 따라 절단한 단면도, 제3도는 제2도의 실시예와 유사하고, 본 발명을 따르는 대체가능한 실시예의 단면도, 제4도및 제5도는 제2도의 실시예와 유사하고, 가변형 밸브 개폐기능이 플런져 작동에 의해 이루어지는 것을 나타내는 단면도, 제6도 및 제7도는 제4도 및 제5도의 밸브작동 기능이 요구되는 지속 기능을 이루도록 액츄에이팅로드(actuating rod)에 의해 이루어지는 플런져작동을 나타낸다, 제8도는 제1도의 실시예와 유사하고, 밸브작동 시기를 수정하지 않고 단위 위상변화만을 이루는 실시예를 나타낸다, 제9도 및 제10도는 제4도 및 제5도의 단면과 유사하고, 제8도의 단면 Ⅲ-Ⅲ을 따르고, 캠의 위상변화에 의한 기능을 나타내는 도면, 제11도 및 제12도는 제6도 및 제7도의 플런져들과 유사하고 제8도의 실시예에서 액츄에이팅 로드를 구성하는 캠의 측면도를 나타낸다, 제13도는 슬라이딩 블록들이 요크의 피봇들과 연결되어, 요크가 부유상태로 요크위치를 찾아내는 대체가능한 실시예의 상세도.1 is a cross-sectional view of the cam shaft of FIG. 2 connected to the engine, taken along section I-I, with a variable valve opening and closing function, and FIG. 2 is a cross section of FIG. Cross-sectional view taken along II-II, FIG. 3 is similar to the embodiment of FIG. 2, and cross-sectional views of alternative embodiments in accordance with the present invention, FIG. 4 and FIG. 5 are similar to the embodiment of FIG. Figures 6 and 7 show that the function is achieved by plunger actuation, and Figs. 6 and 7 show a plunger actuation actuated by an actuating rod to achieve a continuous function where the valve actuation functions of Figs. FIG. 8 is similar to the embodiment of FIG. 1 and shows an embodiment in which only a unit phase change is made without modifying the valve operation timing. FIGS. 9 and 10 are similar to the cross sections of FIGS. Fig. 11 shows the function by the phase change of the cam, following Fig. 11-III of Fig. 8, Figs. 11 and 12 are similar to the plungers of Figs. 6 and 7 and actuated in the embodiment of Fig. 8 A side view of a cam constituting the gating rod is shown, FIG. 13 is a detailed view of an alternative embodiment in which the sliding blocks are connected with the pivots of the yoke to locate the yoke in a floating state.

Claims (9)

중공축과 슬리브와 연결기능의 요크 및 요크 이동장치로 구성되고 상기 슬리브는 중공축에 저널로 결합되고 캠과 함께 고정위치에서 회전이 이루어지며, 상기 요크는 제1피봇핀에 의해 중공축에 연결되고 제2피봇핀에 의해 슬리브에 연결되며, 상기 요크 이동장치는 반경방향으로 이동하여 중공축과 슬리브 사이의 위상변화에 영향을 주도록 구성되는 밸브작동 장치에 있어서, 요크를 반경방향으로 이동시키는 요크 이동장치는 액츄에이팅로드, 캠 접촉면 및 플런져로 구성되며, 상기 액츄에이팅 로드는 중공축으로 미끄럼운동이 가능하게 취부되며 상기 캠 접촉면은 사이기 액츄에이팅 로드상에 위치하고, 상기 플런져는 일반적으로 중공 슬리브내에서 보어(bore)내에서 반경방향으로 이동하여, 액츄에이팅 로드의 축방향 운동에 반응하여 요크를 반경 방향으로 이동시키는 것을 특징으로하는 밸브작동장치.It is composed of a hollow shaft and a sleeve and a yoke and a yoke moving device, and the sleeve is coupled to the hollow shaft as a journal and rotates at a fixed position together with a cam, and the yoke is connected to the hollow shaft by a first pivot pin. And the yoke moving device is configured to move radially to influence a phase change between the hollow shaft and the sleeve, the yoke moving the yoke radially. The moving device is composed of an actuating rod, a cam contact surface and a plunger, the actuating rod is mounted to be slidable by a hollow shaft and the cam contact surface is located on a sigi actuating rod, and the plunger Is generally moved radially in the bore in the hollow sleeve to radius the yoke in response to the axial movement of the actuating rod. Valve operation apparatus, characterized in that for moving in the direction. 제1항에 있어서, 두개의 플런져들이 요크를 반대방향으로 이동시키도록 구성되는 것을 특징으로 하는 밸브작동장치.The valve actuating device of claim 1, wherein the two plungers are configured to move the yoke in opposite directions. 제2항에 있어서, 액츄에이팅 로드상에 위치하는 캠접촉면들은 두개의 플런져들이 항상 유격없이 요크를 구동하도록 구성되어, 가변 위상변화가 액츄에이팅로드를 운동시키는 것에 의해 이루어지는 것을 특징으로 하는 밸브작동장치.3. The cam contact surfaces located on the actuating rod are configured such that the two plungers always drive the yoke without play, so that a variable phase change is achieved by moving the actuating rod. Valve actuator. 제1항 또는 제2항에 있어서, 액츄에이팅 로드상에 위치하는 캠 접촉면들은 플런져들의 단부들과 요크사이에 유격이 존재하도록 구성되고, 일단 캠의 로브가 캠에 의해 구동되는 엔진의 밸브 스템을 통과하여, 밸브 개방기능이 완료 가능해지는 것을 특징으로 하는 밸브작동장치.3. An engine valve according to claim 1 or 2, wherein the cam contact surfaces located on the actuating rod are configured such that there is play between the ends of the plungers and the yoke, and once the lobe of the cam is driven by the cam. The valve operating device characterized in that the valve opening function can be completed through the stem. 전 항들중 한항에 있어서, 아크 모양의 슈들이 플런져들과 요크 사이에 구성되는 것을 특징으로 하는 밸브작동장치.The valve actuating device of claim 1, wherein the arc-shaped shoes are configured between the plungers and the yoke. 제5항에 있어서, 탄성력을 가지는 기울기가 플런져들의 단부들 주위에서 피봇연결이 이루어지는 아크 모양의 슈들에 경사 모양을 형성하고 탄성력을 제공하는 장치로 구성되는 밸브작동장치.6. The valve actuating device of claim 5, wherein the resilient inclination consists of a device for forming the inclined shape and providing the resilient force to the arc-shaped shoes with which the pivot connection is made around the ends of the plungers. 제6항에 있어서, 경사 모양을 형성하고 탄성력을 제공하는 장치가 판스프링으로 구성되는 것을 특징으로하는 밸브작동장치.7. The valve actuating device according to claim 6, wherein the device for forming an inclined shape and providing an elastic force is constituted by a leaf spring. 제6항에 있어서, 경사 모양을 형성하고 탄성력을 제공하는 장치가 각각의 록커들에 의해 아크 모양의 슈들의 단부들에서 작동하는 코일스프링으로 구성되는 것을 특징으로 하는 밸브작동장치.7. The valve actuating device according to claim 6, wherein the device for forming the inclined shape and providing the elastic force is constituted by coil springs operated by the respective lockers at the ends of the arc-shaped shoes. 전 항의 한항에 있어서, 밸브작동장치로 구성되는 내연기관.An internal combustion engine according to any one of the preceding claims, comprising a valve actuating device. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960703066A 1993-12-08 1994-12-06 VARLABLE VALVE TIMING KR970700281A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9325168.4 1993-12-08
GB939325168A GB9325168D0 (en) 1993-12-08 1993-12-08 Variable valve timing
PCT/GB1994/002669 WO1995016108A1 (en) 1993-12-08 1994-12-06 Variable valve timing

Publications (1)

Publication Number Publication Date
KR970700281A true KR970700281A (en) 1997-01-08

Family

ID=10746323

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960703066A KR970700281A (en) 1993-12-08 1994-12-06 VARLABLE VALVE TIMING

Country Status (10)

Country Link
US (1) US5671706A (en)
EP (1) EP0733154B1 (en)
JP (1) JPH09506404A (en)
KR (1) KR970700281A (en)
AT (1) ATE157427T1 (en)
BR (1) BR9408192A (en)
DE (1) DE69405250T2 (en)
ES (1) ES2109803T3 (en)
GB (1) GB9325168D0 (en)
WO (1) WO1995016108A1 (en)

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US6035707A (en) * 1996-12-19 2000-03-14 Main; Scott Camshaft bench tester
US5937809A (en) * 1997-03-20 1999-08-17 General Motors Corporation Variable valve timing mechanisms
GB2324487A (en) 1997-04-26 1998-10-28 Mechadyne Ltd Method of manufacturing a multi-component camshaft
GB2339269B (en) * 1997-04-26 2001-05-02 Mechadyne Internat Plc Method of manufacturing a multi-component camshaft
GB2330894A (en) * 1997-11-03 1999-05-05 Mechadyne Int Plc Phase change mechanism
GB2332730A (en) 1997-11-03 1999-06-30 Mechadyne Int Plc Phase change mechanism
GB2346948A (en) * 1999-02-18 2000-08-23 Mechadyne Int Plc Variable phase mechanism
WO2001088344A1 (en) 2000-05-13 2001-11-22 Krupp Presta Ag Adjusting device for adjusting the relative position of a shaft
AUPR093100A0 (en) * 2000-10-23 2000-11-16 Gibson, David Vincent Variable duration valve timing camshaft
GB2432398B (en) * 2005-11-18 2008-08-13 Lotus Car Reciprocating piston sleeve valve engine
DE102007042053A1 (en) * 2007-09-05 2009-03-12 Mahle International Gmbh piston engine
US7540267B1 (en) * 2007-11-20 2009-06-02 Honda Motor Company, Ltd. Engines with variable valve actuation and vehicles including the same
WO2010096437A2 (en) 2009-02-17 2010-08-26 Cummins Inc. Variable valve actuation apparatus, system, and method
JP5426626B2 (en) * 2011-09-03 2014-02-26 本田技研工業株式会社 Variable valve opening characteristics internal combustion engine
EP4102035A1 (en) 2021-06-08 2022-12-14 Mechadyne International Ltd. Variable phase mechanism

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FR2261413A1 (en) * 1974-02-20 1975-09-12 Baguena Michel Four stroke engine with variable timing - has cams with controlled variable angular relationship to camshaft
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US4771742A (en) * 1986-02-19 1988-09-20 Clemson University Method for continuous camlobe phasing
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GB9015461D0 (en) * 1990-07-13 1990-08-29 Phoenix Lancelot Variable valve timing
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US5417186A (en) * 1993-06-28 1995-05-23 Clemson University Dual-acting apparatus for variable valve timing and the like

Also Published As

Publication number Publication date
ES2109803T3 (en) 1998-01-16
JPH09506404A (en) 1997-06-24
EP0733154A1 (en) 1996-09-25
BR9408192A (en) 1997-08-26
US5671706A (en) 1997-09-30
WO1995016108A1 (en) 1995-06-15
EP0733154B1 (en) 1997-08-27
ATE157427T1 (en) 1997-09-15
GB9325168D0 (en) 1994-02-09
DE69405250T2 (en) 1998-03-19
DE69405250D1 (en) 1997-10-02

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